<!DOCTYPE html>
<html>
<head>
    <title>{% block title %}<h1>这里是base页 - 标题</h1>{% endblock %}</title>
</head>
<body>
    <header>{% block header %}<h1>这里是base页 - 头部</h1>{% endblock %}</header>
    
    <main>{% block content %}<p>这里是base页 - 内容</p>{% endblock %}</main>

    <main>{% block content2 %}<p>这里是base页 - 内容二</p>{% endblock %}</main>
    
    <footer>{% block footer %}<p>这里是base页 - 页脚</p>{% endblock %}</footer>
</body>
</html>